Clear-Com PS-704 4 Channel Rackmount Power Supply for Partyline Series


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Dale #:EA-PS704

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  • 4-Channel 2-Amp Rack Mount (1RU) System Power Supply - UL Listed. 4-channel x 2 intercom jacks, 1 program input, universal power supply. The PS-704 is a four-channel, single rack-space intercom power supply that features Clear-Com’s "fail-safe" design for maximum reliability. The power supply delivers 1.2 amps at 30 volts, supplying power for one to four channels of intercom. It will support up to 40 beltpacks, 10 speaker stations or 12 headset stations.


    • Only one rack space high
    • Provides up to 2 amps total power
    • Supports up to 40 beltpacks, 10 speaker stations or 12 headset stations
    • One to four channels of intercom with individual channel power protection
    • Automatic short circuit protection and reset for each channel
    • “Short” power indicator LED’s for each channel
    • Program input with selectable channel assignment and individual channel level controls
    • Can be paralleled with other power supplies and main stations for increased capacity or backup support
    • Switchable terminations on each channel
    • Unitized chassis construction for strength and durability
    • Universal power supply accepts 100 - 240 VAC
    • UL listed and CE certified.
  • Program Line Input
    Maximum Level before Clipping>= 20dBu
    Input Impedance>= 5KO
    Frequency Response
    Program Input - Party-line200 - 20KHz ± 3dB
    Max Distortion
    Program Input - Party-line <= 0.2%
    Program Mic Input - Party-line< -70dBu
    Max Gain
    Program Input - Party-line>= -16dB
    Min Gain
    Program Input - Party-line<= -20dB
    Mains Power
    Input Voltage Range100 - 240 VAC
    Input Frequency Range50 - 60 Hz
    Input Power<= 60 VAC
    Output Voltage30 VDC ± 0.5V
    Output Current per Channel (Continuous)1.2 A
    Output Current per Channel (Peak)2 A (Do not exceed the 1.2A rating for more than 2 seconds per 1 minute period)
    Short Circuit Recovery Time (1st short)<= 0.5 sec
    Short Circuit Recovery Time<= 20 sec
    Station CapacityUp to 40 RS-601 beltpacks or 10 speaker stations or 12 headset stations distributed over both channels
    Rear Panel Connectors
    Intercom(8) XLR-3M (2 per channel)
    Program(1) XLR-3F
    AC PowerIEC 320 connector
    Rear Panel Controls(4) Termination On-Off switches
    (1) Volume control
    Front Panel Controls & Indicators(4) Program switch
    (4) Send level controls
    (4) Overload LEDs
    (1) Power indicator LED
    (1) Power switch
    Environmental32° - 122°F (0 - 50°C)
    Dimensions19 in. W x 1.75 in. H x 7.5 in. D (483 mm x 44 mm x 190 mm)
    Weight6.16 lbs. (2.80 kg)
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